Question: Name the island closest to the river mouth.
Paraphrase: What is the island closest to the mouth of the river?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q23442 . ?ent wdt:P2148 ?obj . ?ent wdt:P31 wd:Q23442. } ORDER BY ASC(?obj)LIMIT 5